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kernel/syscalls: Implement sys_tell & sys_seek

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Signed-off-by: EnderIce2 <enderice2@protonmail.com>
This commit is contained in:
EnderIce2
2024-12-26 03:20:27 +02:00
parent b208862de2
commit 1695418dcb
2 changed files with 71 additions and 0 deletions
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18
Kernel/syscalls/native.cpp
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@ -159,6 +159,22 @@ static int sys_access(SysFrm *Frame, const char *pathname, int mode)
static int sys_truncate(SysFrm *Frame, const char *pathname, off_t length) { return -ENOSYS; }
static int sys_ftruncate(SysFrm *Frame, int fd, off_t length) { return -ENOSYS; }
static int sys_tell(SysFrm *Frame, int fd)
{
PCB *pcb = thisProcess;
vfs::FileDescriptorTable *fdt = pcb->FileDescriptors;
return fdt->usr_lseek(fd, 0, SEEK_CUR);
}
static off_t sys_seek(SysFrm *Frame, int fd, off_t offset, int whence)
{
PCB *pcb = thisProcess;
vfs::FileDescriptorTable *fdt = pcb->FileDescriptors;
return fdt->usr_lseek(fd, offset, whence);
}
static __noreturn void sys_exit(SysFrm *Frame, int status)
{
TCB *t = thisThread;
@ -333,6 +349,8 @@ __constructor void __init_native_syscalls(void)
scTbl[SYS_ACCESS] = {"SYS_ACCESS", (void *)sys_access};
scTbl[SYS_TRUNCATE] = {"SYS_TRUNCATE", (void *)sys_truncate};
scTbl[SYS_FTRUNCATE] = {"SYS_FTRUNCATE", (void *)sys_ftruncate};
scTbl[SYS_TELL] = {"SYS_TELL", (void *)sys_tell};
scTbl[SYS_SEEK] = {"SYS_SEEK", (void *)sys_seek};
/* Process Control */
scTbl[SYS_EXIT] = {"SYS_EXIT", (void *)sys_exit};